Tips on Writing a Sequel (When You Didn’t Plan to Write a Sequel)

This is an interesting read. I hadn't planned on writing a series either, even at the very end of the first book, Sullivan's Secret. But after I had finished, I began to miss my characters and all of the voices in my head were calling for me to carry them through another mystery. Enjoy these tips by Ellen Kushner from the Writer's Dig at Writer's Digest.